How does a fertilized egg develop into baby?

- A sperm cell fertilizes an egg cell in the fallopian tube, resulting in the formation of a zygote.

- The zygote contains the genetic material from both parents and undergoes rapid cell division as it travels through the fallopian tube.

2. Blastocyst Formation:

- The dividing cells form a hollow ball of cells called a blastocyst.

- The blastocyst continues to divide as it moves toward the uterus.

3. Implantation:

- The blastocyst hatches out of its protective layer and implants into the uterine lining.

- The outer cells of the blastocyst form the placenta, which connects the developing fetus to the mother's blood supply.

4. Embryonic Development:

- The inner cell mass of the blastocyst develops into the embryo.

- The embryo's organs and tissues start to form through a process called organogenesis.

- Major organ systems, including the heart, brain, and lungs, begin to develop.

5. Fetal Development:

- As the embryo grows and develops, it becomes known as a fetus.

- The fetus continues to mature, with its organs and body systems becoming more complex and functional.

- The fetus is surrounded by amniotic fluid, which provides protection and cushioning.

6. Birth:

- When the fetus is fully developed, usually around 38-40 weeks of gestation, childbirth (labor and delivery) occurs.

- The fetus is expelled from the uterus through the birth canal.

Throughout the entire process of embryonic and fetal development, the mother's body undergoes significant changes to support the growth and development of the baby. Hormones, such as progesterone and estrogen, help maintain the pregnancy, while the placenta facilitates the exchange of oxygen, nutrients, and waste products between the mother and the developing fetus.